What is the dangerous concrete known as ‘RAAC’? #itvnews #schools #concrete #building

[lanabmc]

Been going on years. Substandard concrete, substandard steel, substandard cladding etc etc. cutting corners to minimise cost and maximise profits but when it goes dangerously wrong those who made the profit are nowhere to be seen.

[KnightRider]

2000 year old Roman buildings still standing.

[MrDominicharrison]

The romans build concrete structures still in use today

Only in modern Britain do we build cheap sh&t that falls apart in a few years, well us and china

[terryoflinn]

Yes romans made the roof of the pantheon with concrete made with lightweight pumace/ash no reinforced steel or iron & its still standing

[citywalker]

Nice and simple explanation
I had no clue until this clip

[stickemuppunkitsthefunlovi]

As a builder iv never seen this concrete. Just saying.

[ArtistFormallyKnownasMC]

Thanks for the quick video. I live in the United States, and was very confused with some news coverage when they mentioned RAAC.
Over here we have building materials on the inside that had asbestos in it, it was common years, but is actually hazardous to humans, but there are still buildings, and even schools can potentially still have it so we would have annual training about it every year. Basically, if you see something you think is it, just leave it alone and call for help. 😂😂
So I was just trying to find context clues on what was going on here!
Like if it was some thing on the inside construction or there actual building itself. Yikes

[hellzbellz]

This is like using 1960's materials where some homes of nontraditional build where constructed with poor concrete & rebar, that suffered rebar rust due to expansion & contraction due to heat changes - why has progress gone backwards? why use something known to fail in the past? Mind boggling!😮

[TheLuminousOne]

What Rocket Scientist Structural Engineer thought that would be any good ?!

[wollyxl]

This has been happening for years known in the industry as concrete cancer this happened to the Duncan building situated at the Royal Liverpool University Hospital water gets to the read bar which then corrodes forcing the concrete off in chunks it's not just the schools it's almost every building of the same age

[More-Space-In-Ear]

It's more like breeze blocks, loads of buildings have been built with that.

[Nick-xcfy]

Thank god they used RAAC to construct all those floating schools, at least they won't sink.

[aspunkyyacker]

Is that not just thermal block? More for insulation over structural?

[saucelessbones]

There purpose is not for load bearing is for unimportant structures like mby interiour walls and isolation

[shyft]

It's also a fantastic insulator. If you use it beyond its stated life span, or don't maintain it, it might collapse - duh. This is about saving money by deciding not to maintain school buildings

[azali]

Back in roman times you had no building laws but their building still stands today.

[Mintosh-kicl]

Journalist probably considers himself an engineer now 🤣

[Aloh-odef]

Also known as breeze blocks!

Every bricklayer knows that breeze blocks can’t handle as many newtons. As concrete!

Thanks you for stating the obvious 😂

[TAURUSPLASTERING]

so can all re enforced concrete from the 60's + 70's the real question is regular 15 year building inspections
building structures with at the time new technology to get 60+ years out of a poorly maintained under funded structure i think the architect did alright for the time it was all manufactured

[briscoethecollie]

It's like building schools out of Aero's